Effect of Preferential Diffusion on Turbulent Combustion of Hydrogen Mixtures.
Effect of Preferential Diffusion on Turbulent Combustion of Hydrogen Mixtures.
复制标题
优先扩散对氢气混合物湍流燃烧的影响。
DOI：
10.1299/kikaib.62.3198
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
Takayoshi Inoue
中科院分区：
文献类型：
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作者：
H. Kido;M. Nakahara;Takayoshi Inoue
近年来，为了保护环境和节约能源，阐明氢气混合物的湍流燃烧机理和湍流火焰中的局部燃烧机理已成为建立内燃机稀薄燃烧技术的必要条件。前期工作的实验结果表明，烃类混合物湍流燃烧时的局部燃烧速度由原来的层流燃烧速度发生了变化，并通过路易斯数和优先扩散的影响定性地解释了这一机制。本文的目的是定量估计由优先扩散引起的氢气混合物湍流燃烧的局部燃烧速度的变化。此外，建议当使用估计的局部燃烧速度而不是层流燃烧速度作为参考时，无论燃料种类如何，都可以解释熄火机制。
Recently, clarifying the turbulent combustion mechanism of hydrogen mixtures and the local burning mechanism in the turbulent flame has become necessary to establish the lean-burn technique in internal combustion engines in order to protect the environment and save energy. In previous work, experimental results indicated that local burning velocity in turbulent combustion of hydrocarbon mixtures changed from the original laminar burning velocity, and this mechanism was qualitatively explained in terms of the effects of the Lewis number and preferential diffusion. The purpose of this paper is to estimate quantitatively the change in the local burning velocity of the turbulent combustion of hydrogen mixtures, caused by preferential diffusion. In addition, it is suggested that the quenching mechanism can possibly be explained regardless of the kind of fuel, when the estimated local burning velocity is used as a reference instead of the laminar burning velocity.